Charles j



(No Model.)

C. J. PETGBN.

LOCK.

No. 586,780. Patented July 20, 1897.

l n Irl/ll) WITNESSES UNTTED STATES PATENT OFFICE.

CHARLES J. PETGEN, OF PITTSBURG, PENNSYLVANIA.

LOCK.

SPECIFICATION forming part of Letters Patent No. 586,780, dated July 20, 1897.

Serial No. 607,971. (No model.)

.To 1l/ZZ whom, 25 may concern.-

Be it known that 1, CHARLES J. PETGEN, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discovered a new and useful Improvement in Locks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this application, in which- Figure l is a plan View of the top portion of my lock. Fig. 1 is a partial similar view showing the dial-plate set at the startingpoint. Fig. 2 is a vertical longitudinal section taken on the line Il Il of Fig. 1, the dialplates being shown at the starting-point. Fig. 3 is a perspective view of the underside ofthe dial-plate. Fig. 4- is a partial longitudinal section similar to Fig. 2, showing the central locking-plate and pins in a lowered position. Figs. 5 and (i are detail views showing the click-spring in and out of engagement with the notches of the lockingdisk. Fig. 7 is a plan view of the under side of Fig. 5 detached from the frame. Fig. 8 is a horizontal sectional view of the lockingplate in engagement with the hasp-plate, the section being taken on the line VH1 VIII of Fig. et. Fig. 9 is a vertical cross-sectional view taken on the lino IX IX of Fig. 1. Fig. 10 is a similar sectional view showing the parts in position corresponding to Fig. al., the hasp-plate being removed. Fig. 11 is a partial plan view of the plate upon which the rotating dial-plates are mounted. Fig. 12 is a cross-section through Fig. 11 on the line XII XII.

Similar numerals refer to like parts wherever used throughout this specication.

My invention consists of a combinationloclt,and refers more particularly to the means for operating it by sound.

Referring to the drawings, 2 3 represent the two sides of a satchel or any other appropriate article in a closed position, the side 2 having firmly secured to it by means of bolts l the lock-inclosing case 5 and upper plate G, and the side 3 having secured to it by any desirable means the hasp-plate 7, having therein the slot 8.

Mounted in the central part of the case 5 is the vertically-movable locking-plate 10, se- 1 cured to a stud 11, the lower end of which, 12, extends through and has a bearing in the lower plate 13 of the case 5, and the upper end of which, lf-L, extends through the plate G and constitutes a push-button.

Surrounding the lower stud 12 is a coiled spring 15, which normally holds the plate 10 in an upper or locking position, as shown in Figs. 2 and 9, the upward motion being limited by a shoulder 16, bearing against the edge of a plate 17, forming part of the case 5. The plate l0 is provided along its l ront edge with an upturned lip 1S, the outward face of which is rounded to facilitate the entrance of the hasp-plate 7, the face of which is also similarly rounded.

A slot 19 for the entrance of the hasp-plate is made in the face of the case 5, corresponding in dimensions to the size o'l the hasp, so as to permit it to easily ride over and depress the lip 18.

Located at cach side of the center stud 11 are two vertical studs 20, having reduced extensions or stems 21 at their lower ends, which also have a bearing in the plate 13 and to which are rigidly attached the circular register-plates 22, each having therein a hole 23, which in a certain position of the registerplates is brought into alinement with one of the pins 2l, projecting downwardly from the lower face of the plate l0.

A series of blind holes 25 are locatedaround the top surface of the register-plates, as shown in Fig. 9, for the purpose of confusing and preventing the opening of the lock by one unfamiliar' with the combination.

The upper portion of the studs 2O is reduced so as to leave a shoulder 26, which has a bearing against the plate 17, the reduced extension 27 passing therethrough and terminating in a polygonal reduced extension 28, from the center of which projects upwardly a screw-threaded stud 29, upon which is screwed a button 9, milled around its edge, and upon the polygonalextension 28 is placed the circular dial-plate 30, having a polygonal opening in its center corresponding to the size, shape, and dimensions of the extension 2S. This dial-plate fits neatly in a 4circular opening in the plate 6, as shown, and has on its face a series of figures or characters corresponding in number to the sides of the IOO polygonal opening and to the number of holes in the plate 22.

At any predetermined point on the plate 6 a notch or mark 31 is made, so that when each of the numbers or characters is brought successively into register with the mark 31 one of the holes in the plate 22 will be brought into alinement with the pin 24. It will be seen thatA in only one position of the dialplate will the open hole 23 be in alinement with the pin 24, and when both holes are so y in alinement, as shown in Figs. 2 and 4, the

push-button 14 may be depressed, thus withdrawing the lip 18 for unlocking, as in Fig. 10, or allowing the hasp-plate to be inserted for locking.

The numbers on the dial-plate, as has been said, correspond to the number ofI sides of the polygonal extension 2S, whereby changes in the combination may be made.

The under side of each register-plate 22 is provided with a V-shaped groove 29 under eachhole, so that as each hole passes a given point its corresponding groove will also come into register with the correspondingly V- shaped ends 32 of a bifurcated leaf-spring 33, held in position by the stem 12 and exertinga pressure upwardly, so that as the plates 22 are turned the ends 30 will be depressed out of engagement, as shown in Fig. 6, and

` will spring into the next succeeding groove with an audible click. By turning the stem 20 very slowly the click maybe obviated and the seating of the spring ends in the grooves determined by the feeling of the fingers of the operator.

It will be seen, Figs. 2 and 7, that the location of the grooves and spring is such that when in engagement one of the holes in the register-plate will be in register with the pin 24. By any predetermined combination, as 47, (shown in Fig. 1,) reading from the right, the holes 23 are made to register with the pins 24. By counting the number of clicks, commencing with the click corresponding to number 1, the same combination may be made without seeing the dial-plate, and in order to provide a starting-point I have provided on the under side of the dial-plate 30 a shoulder 34, located about midway between the numbers 1`and 8, as in Fig. 1, so that when the plate is so placed in position it may be turned for the same number of clicks corresponding to the combination, and the pins and open holes will be in register.

For the purpose of providing an interferingstop to engage the shoulder 34 a cut is made in a plate 35 at 3G and a spring-shoulder 37 is forced upwardly, so as to engage the shoulder 34 when turned to the right, but not to the left, and of sufficient elasticity to be depressed by the dial-plate until the shoulders are so in register.

The operation from the foregoing description is obvious, since when the dials are set to the proper combination by the process of counting the clicks, beginning with 1, the

holes and pins will be in register, allowing the plate 10 to be depressed and the haspplate removed.

Changes will suggest themselves to the skilled mechanic within the scope of my invention, and I desire to be understood as including all such changes and modifications.

Having described my invention, what I claim is- 1. In combination with a movable lockingplate engaging a hasp-plate, and registerplates provided with openings for pins on the locking-plate mounted on-dial-stems; a iigured dial having a stop on its under surface and a spring-shoulder designed to engage such stop, substantially as set forth.

2. In combination with a movable lockingplate engaging a hasp-plate, and registerplates provided with openings for pins on the locking-plate mounted on dial-stems and provided with radial grooves thereon; a spring designed to engage suchv grooves, substantially as set forth.

3. In combination with a movable lockingplate engaging a hasp plate and registerplates provided with openings for pins in the locking-plate mounted on dial-stems and provided with radial grooves thereon; a figured dial having a stop on its under surface, a spring-shoulder designed to engage such stop, and a spring designed to engage the radial grooves on the register-plates, substantially as set forth.

4. In a lock of the class described, in combination with a movable locking-plate provided with an upturned lip for engagement with a hasp-plate, astem supporting thelocking-plate having bearings in the case of the lock, one end of such stem constituting a push-button, and register-plates provided with openings for pins in the locking-plate mounted on dial-stems; a figured dial mounted on the stem provided with a stop on its under surface and a spring-shoulder designed to engage such stop, substantially as set forth.

5. In a lock of the class described, in combination with a movable locking-plate provided with an upturned lip for engagement with a hasp-plate, a stem supporting the locking-plate having bearings in the case of the lock, one end of such stem constituting a pushbutton, and register plates provided with openings for pins in the locking-plate mounted on dial-stems; a figured dial mounted on the stem provided with a stop on its under surface and a spring-shoulder designed to engage such stop, radial grooves on the under side of the register-plates, and a spring designed to engage such grooves, substantially as set forth.

In testimony whereof I have hereunto set my hand this 11th day of August, 1896.

CHARLES J. PETGEN.

Vitnesses:

ROBERT C. DUNCAN, C. M. CLARKE.

IOO

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